This is How I Sleep at Night.

The lazy answer is "God is the ultimate arbiter concerning right and wrong." A better answer is "You reap what you sow." The best response would be that "God knows just what we need to know and how to best get it to us." In other words, "all things work together for good to them that love God, to them who are the called according to his purpose."

Take care, and may God bless you.